As in the present case, one of the causes of functional TR is AF, which often develops adverse right ventricular remodeling by altering right
ventricular compliance, resulting tricuspid annular dilation, and leaflet coaptation defect [7].
Therefore, a decrease in the left arterial contraction could be directly associated with an improvement of the left
ventricular compliance. These findings suggested that the increase in cardiac preload could have been caused by the improvement of
ventricular compliance after esmolol therapy.
RCM was diagnosed with biatrial dilatation, decreased left
ventricular compliance (delayed relaxation) with diastolic dysfunction.
This was not surprising considering the frequently increased left atrial pressure and volume resulting from diminished left
ventricular compliance, even in the absence of mitral regurgitation.